18 - ENG
TROUBLESHOOTING
voltage sources, moving parts or compressed air sources. Personal injury
may occur. Prior to attempting any repairs, unplug the air compressor and
PROBLEM CAUSE CORRECTION
Excessive tank pres-
sure - safety valve
pops off.
Pressure switch does not shut
off motor when compressor
reaches "cut-out" pressure.
Move Off/Auto switch
to the "OFF" position, if
the unit does not shut off
contact a Trained Service
Technician.
Pressure switch "cut-out" too
high.
Contact a Trained Service
Technician.
Air leaks at fittings. Tube fittings are not tight
enough.
Tighten fittings where air
can be heard escaping.
Check any exposed fit-
tings with soapy water
solution. DO NOT
OVERTIGHTEN.
Apply thread seal tape to
threads of exposed fit-
tings.
Air leak from safety
valve.
Possible defect in safety valve. Operate safety valve
manually by pulling on
ring. If valve still leaks,
Contact a Trained Service
Technician.
KnockingNoise. Possible defect in safety valve. Operate safety valve
manually by pulling on
ring. If valve still leaks,
Contact a Trained Service
Technician.
Pressure reading on
the regulated pres-
sure gauge drops
when an accessory
is used.
It is normal for "some" pressure
drop to occur.
If there is an excessive
amount of pressure drop
when the accessory is
used, adjust the regulator
following the instructions
in the
Operation paragraph in
the Operation section.
NOTE: Adjust the regu-
lated pressure under flow
conditions (while acces-
sory is being used).
For assistance with your machine, visit our website at www.portercable.com for
a list of service centers or call the help line at 1-(888)-848-5175.
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